A5071813727- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- Distributed and Parallel Computing Systems
- High-Energy Particle Collisions Research
- Quantum chaos and dynamical systems
- Neutrino Physics Research
- Electromagnetic Simulation and Numerical Methods
- Real-time simulation and control systems
- Dark Matter and Cosmic Phenomena
- International Science and Diplomacy
- Plasma Diagnostics and Applications
- Quantum Chromodynamics and Particle Interactions
- Numerical methods for differential equations
- Geophysics and Gravity Measurements
- Semiconductor Lasers and Optical Devices
- Nuclear Physics and Applications
- Laser-Plasma Interactions and Diagnostics
- Radiation Detection and Scintillator Technologies
- Photonic and Optical Devices
- Electromagnetic Launch and Propulsion Technology
European Organization for Nuclear Research
2015-2024
University of Crete
2019-2024
Université Grenoble Alpes
2024
National Technical University of Athens
2021
University of Bern
2018
Brookhaven National Laboratory
2000-2014
University of Cyprus
2010-2011
European Science Foundation
2003-2006
RIKEN BNL Research Center
2002
Oak Ridge National Laboratory
2001
The motion of beams in particle accelerators is dominated by a plethora non-linear effects which can enhance chaotic and limit their performance. application advanced dynamics methods for detecting correcting these thereby increasing the region beam stability plays an essential role during accelerator design phase but also operation. After describing nature impact on performance parameters different categories, theory outlined. recent developments employed analysis are detailed. In...
A beam optics scheme has been designed for the future circular collider-${e}^{+}{e}^{\ensuremath{-}}$ (FCC-ee). The main characteristics of design are: energy 45 to 175 GeV, 100 km circumference with two interaction points (IPs) per ring, horizontal crossing angle 30 mrad at IP and crab-waist [P. Raimondi, D. Shatilov, M. Zobov, arXiv:physics/0702033; P. in Proceedings 22nd Particle Accelerator Conference, PAC-2007, Albuquerque, NM (IEEE, New York, 2007), p. TUPAN037.] local chromaticity...
This paper summarizes the low-loss design for Spallation Neutron Source accumulator ring [``Spallation Design Manual'' (unpublished)]. A hybrid lattice consisting of FODO arcs and doublet straights provides optimum matching flexibility injection collimation. For this lattice, optimization focuses on six goals: a space-charge tune shift low enough (below 0.15) to avoid strong resonances, adequate transverse momentum acceptance efficient beam collimation, optimized desired target shape minimal...
The Large Hadron Collider (LHC) is one of the largest scientific instruments ever built. Since opening up a new energy frontier for exploration in 2010, it has gathered global user community working fundamental particle physics and hadronic matter at extreme temperature density. To sustain extend its discovery potential, LHC will undergo major upgrade 2020s. This increase rate collisions by factor five beyond original design value integrated luminosity ten. configuration, known as High...
A weak-strong simulation code is used to study the single-particle stability in presence of triplet field errors, head-on collisions, and long-range beam-beam interactions at Large Hadron Collider. We present dependence simulated transverse diffusion rate on various parameters, such as starting amplitude, working point tune diagram, crossing angle, beta function interaction points (IPs), beam current, nonlinearities, modulation, a offset one two IPs. For several examples, we perform...
Colliding bunch trains in a circular collider demands certain crossing angle order to separate the two beams transversely after collision. The magnitude of this is complicated function charge, number long-range beam-beam interactions, β* and type optics (flat or round), possible compensation additive effects between several low-β insertions ring depending on orientation plane at each interaction point. About 15 years ago, use current bearing wires was proposed CERN mitigate [J. P. Koutchouk,...
Weak-strong tracking simulations for the Large Hadron Collider have shown that long-range beam-beam collisions give rise to a well-defined diffusive aperture beyond which particles are lost quickly. In order derive analytical estimates of this stability boundary, we use leading perturbation theory and Chirikov resonance overlap criterion applied simplified model with 2-dimensional transverse phase space. addition, Fokker-Plank--type diffusion coefficient is calculated through nonlinear...
Top-up injection is an essential ingredient for the future circular lepton collider (FCC-ee) to maximize integrated luminosity and it determines design performance. In ttbar operation mode, with a beam energy of 175 GeV, lifetime ∼1 h shortest four anticipated operational modes, may be even shorter in actual operation. A highly robust top-up scheme consequently imperative. Various methods are investigated number suitable schemes considered developing alternative designs straight section...
Future ultralow emittance rings for <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>e</a:mi><a:mo>−</a:mo></a:msup><a:mo>/</a:mo><a:msup><a:mi>e</a:mi><a:mo>+</a:mo></a:msup></a:math> colliders require extremely high beam brightness and can thus be limited by collective effects. In this paper, the interplay of effects such as synchrotron radiation, intrabeam scattering (IBS), space charge in vicinity excited betatron resonances is assessed. respect, two...
To achieve high luminosity at the collision point of Compact Linear Collider (CLIC), normalized horizontal and vertical emittances electron positron beams must be reduced to 500 4 nm before enter 1.5 TeV linear accelerators. An effective way accomplish ultralow with only small effects on polarization is using damping rings operating 2.86 GeV equipped superconducting wiggler magnets. This paper describes a technical design concept for CLIC wigglers.
Recently, the Hamiltonian Control Theory was used in [Boreux et al., 2012] to increase dynamic aperture of a ring particle accelerator having localized thin sextupole magnet. In this paper, these results are extended by proving that simplified version obtained general control term leads significant improvements uncontrolled model. addition, dynamics flat beams based on same model can be significantly improved reduced controlled applied only one degree freedom.
The bunch profiles in the LHC are often observed to be non-Gaussian, both at Flat Bottom (FB) and Top (FT) energies. Especially FT, an evolution of tail population time is observed. In this respect, Monte-Carlo Software for IBS Radiation effects (SIRE) used track different types beam distributions. impact distribution shape on characteristics studied. results compared with observations from Run 2 data.
Abstract A new scenario for the first operational run of High Luminoisty LHC (HL–LHC) era (Run 4) has recently been developed to accommodate a period performance ramp-up achieve an annual integrated luminosity close nominal HL–LHC design target. The in terms beam parameters and machine settings, as well different phases reach optimal performance, are described here along with impact potential delays key hardware components.
The theoretical minimum emittance cells are the optimal configurations for achieving absolute emittance, if specific optics constraints satisfied at middle of cell's dipole. Linear lattice design options based on an analytical approach presented in this paper. In particular parametrization quadrupole strengths and functions with respect to drift lengths is derived. A multiparametric space can be then created all cell parameters, from which one choose any them optimized. An application...